Schlumberger for Tiffany Co., A Kunzite, Diamond, and Ruby 'Bird on a Rock' BroochPhoto Philips de Pury & Company

Designed as a circular-cut diamond bird, with a circular-cut ruby eye and gold head plume feathers, beak and legs, perched on a cushion-cut kunzite, mounted in platinum and 18K gold, length 2 1/4 inches.  Signed 'Tiffany & Co. Schlumberger' in an original fitted box. Lot 133. Estimate $25,000-30,000. Unsold

Philips de Pury & Company. 6 December 2011